How Google (and other SEs) crawl and ranks PDF files?
There is one common thing that link web 2.0 users: the necessity to take part of this new fantastic world contributing to it, inserting web pages, picture, documents, comments and so on. So, it's not rare to see emerging web sites containing tons of new material rather than a forum at the top of the SERPs. And it's not rare to see different type...
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